JPH05138323A - Device for exchanging die in injection forming apparatus - Google Patents

Abstract

PURPOSE:To provide a device, in which any complicated die having a core cylinder, etc., can safely and easily be exchanged. CONSTITUTION:A fixed plate side die receiving table 8 for advancing/retreating by driving an air cylinder 12 in a machine base 1 is arranged adjacent the fixed plate 2. A movable plate side die receiving table 9 for advancing/retreating on a guide shoe 4a of the movable plate 4 is arranged adjacent the movable plate 4. A connecting rod for connecting the fixed plate side die receiving table 8 and the movable plate side die receiving table 9 as fittable/detachable is arranged at the lower position. One end of this connecting rod is fixed and the other end is formed as fittable/detachable. Plural pieces of rollers for rolling the dies 6, 7 are parallel arranged at the upper end parts of the fixed side die receiving table 8 and the movable plate side die receiving table 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding apparatus such as a horizontal mold clamping die casting machine or injection molding machine, in which a used mold is taken out of the machine and the next mold is mounted instead. It relates to a switching device.

[0002]

2. Description of the Related Art As a mold exchanging device of this type, for example, a device proposed by the applicant company 1 and disclosed in Japanese Utility Model Publication No. 58-2536 is known. The horizontal mold clamping type injection molding apparatus provided with the above is generally configured as follows.

That is, for example, in the case of a horizontal die-clamping die casting machine, on the machine base, a fixed platen having four corners connected by tie bars and a die-clamping plate are erected with their planes facing each other. Between the mold clamping plate and the mold clamping plate, a movable plate that moves forward and backward with respect to the fixed plate by a mold clamping cylinder fixed to the mold clamping plate is slidably supported by the tie bar. A movable mold and a fixed mold are detachably attached to the board. Then, the movable mold is moved together with the movable plate by the mold clamping cylinder and clamped with respect to the fixed mold, and the molten metal injected into the cavities of the molds that have been clamped solidifies to obtain a product.

The mold exchanging device attached to the die casting machine thus constructed is positioned below the mold at the time of mold clamping, supported by a pair of lower tie bars, and extends in a direction orthogonal to the mold clamping direction. One roller table is provided, and this one roller table has a plurality of rollers which are driven by a motor and rotate in unison with the axial direction perpendicular to the extending direction of the roller table. And 1 on the movable platen side
Each row is arranged in parallel in the extending direction of the roller table, exposing a part of the upper surface of the roller table. A small gap is provided between the upper surface of the roller on the movable plate side and the lower surface of the movable mold during normal mold opening and closing. Further, hydraulic cylinders for advancing and retracting the roller table in the mold clamping direction are fixed to both right and left side surfaces of the fixed platen. A pedestal continuous with the roller table is provided outside the machine and fixed on the floor, and the pedestal is also provided with rollers. In addition,
Since the movable mold is generally large and heavy, in addition to the clamp device for fixing the movable mold to the movable plate, a movable mold receiving device for supporting the lower end surface of the movable mold from below is provided. ..

With such a structure, when exchanging the mold, the used fixed mold and the movable mold are integrated by a connecting plate or the like, and then the fixed plate and the movable plate are combined. Release the fixing and place it on the roller of the roller table that is stopped near the fixed platen. In this case, the movable plate side die receiving device is moved down by the gap between the lower surface of the movable die and the upper surface of the roller to lower the movable die onto the roller. Of course, a similar gap may be provided between the lower surface of the fixed mold and the upper surface of the roller on the fixed plate side, and the fixed mold can be lowered on the roller together with the movable mold.

Then, the roller table is slightly moved to the movable platen side away from the fixed platen by the hydraulic cylinder,
When the motor is operated, the rollers rotate together, so that the mold moves on the pedestal due to the rolling of the rollers. Therefore, the used mold on the gantry is replaced with the next mold, and the next mold is mounted in almost the reverse order. In the above publication, the mounts are provided on both sides of the machine base, the next mold is prepared on the mount on the opposite side in advance, and the used mold is discharged onto the mount outside the machine immediately after the next mold is discharged. It is disclosed that the mold is fed into the machine from the gantry on the opposite side.

By the way, in recent years, a core is often used due to the complexity of injection products, and in the case of a horizontal mold clamping mold, a cylinder for advancing and retracting the core is often hung below the mold. In the conventional mold exchanging device, no consideration has been given to such a mold with a core cylinder, and in order to cope with this, a lower tie bar supporting the roller table or a roller table is supported. The connecting member must be removed every time the mold is replaced, and this operation is almost impossible.

In addition, in this mold exchanging device, it is necessary to specially provide a movable mold receiving device, and
It was necessary to operate the movable platen die receiving device capable of moving up and down for lowering the die on the roller table, and to use a crane.

Therefore, in recent years, it has been proposed that one wide roller table as in the above example is provided separately so that the core cylinder can pass therethrough. Therefore, this device will be described below. To do.

In this apparatus, a roller table which is normally adjacent to a fixed platen and a roller table which is spaced apart from the movable platen in the fixed platen direction are formed separately from each other.
Equipped with a die cradle consisting of individual roller tables,
The stationary plate side die cradle is provided on the machine base side horizontal member such as the machine base so as to be slidable in the axial direction of the machine base. The movable plate side die cradle is slidably provided in the axial direction of the machine base on a guide shoe for the movable plate that slides on the machine base integrally with the movable plate. The die receiving base on the fixed platen is provided so that it can be driven back and forth by a cylinder supported by the fixed platen. The fixed mold and the movable mold are
Even when it is attached to the fixed platen and the movable platen, the lower surface of the fixed platen and the movable platen is in contact with the rollers on the upper surface of the die receiving table composed of these roller tables.

The lower surface of the fixed mold is provided with a groove into which the roller of the fixed plate side mold cradle is inserted, and the fixed mold and the movable mold are die clamps having a predetermined width. It is detachably attached to the fixed plate and the movable plate by the device. Therefore, when exchanging dies, keep both dies slightly apart from the die mounting surfaces of the fixed plate and the movable plate, which are slightly larger than the width of the die clamp device, and then move the dies on the fixed plate side and the movable plate side. It is necessary to move the rollers on the cradle and take them out.

With this configuration, when the mold is replaced, the fixed plate is fixed to the fixed plate and the movable plate is fixed to the movable plate, and then the movable plate is moved. Simultaneously with opening the mold, the fixed plate side cylinder pushes out the fixed plate side mold cradle to move both molds to a position where they do not interfere with both die clamp devices. At this time, as the movable platen moves, the rollers of the mold receiving table on the movable platen sideways move while sliding on the lower surface of the movable mold.

After that, when the core cylinder or the like is hung from the mold, the tie bar on the mold take-out side and on the lower side is pulled out to roll both molds on the rollers of the mold cradle. You can take it out of the plane while doing so. In this case, the core cylinder or the like hanging from the mold does not hinder the removal of the mold as long as its movement path is a space.

[0014]

In such a conventional mold exchanging device, when exchanging the mold, the die clamp device between the fixed mold and the movable mold is released to move the fixed mold and the movable mold. After removing the mold from the fixed platen and the movable platen, the movable platen is retracted in the mold opening direction, the cylinder supported by the fixed platen is moved forward, and the fixed platen-side die cradle is pushed to the movable platen side. By doing so, the fixed mold in which the rollers of the fixed plate side mold cradle are in the groove and the movable mold integrally connected with the fixed mold for the mold replacement are operated by the cylinder. Along with this, it moves to a predetermined position on the movable platen side. However, in this case, since the mold cradle on the movable platen side is integrated with the movable platen that retracts in the mold opening direction, this mold cradle retracts more than the extrusion amount of the mold by the cylinder and moves. The roller of the mold cradle on the board side slides on the lower surface of the movable mold and retracts in the mold opening direction to stop near the end of the movable mold on the movable board side. In this case, there is a large possibility that the roller that slides on the lower surface of the movable mold and moves in the lateral direction perpendicular to the rotation direction is damaged.

Further, in the above case, in the case where the core cylinder is suspended from the lower surface of the movable mold, when the mold is moved on the roller of the mold receiving stand and taken out of the machine, Since it is necessary to prevent the core cylinder from interfering with the mold cradle, the position to stop the roller of the mold cradle on the movable plate side for mold replacement is the movable plate side on the lower surface of the movable mold. There is a problem in that the fixed mold side of the lower surface of the movable mold has to be opened considerably large so that it is near the end.

Further, the position of the lower surface of the movable mold with which the roller of the movable plate side mold cradle was in contact during the normal mold clamping,
Both the movable mold and the movable platen have retreated by different amounts.When exchanging the mold, it is necessary to set a considerably large distance between the movable platen die pedestal roller and the lower surface position of the movable mold which is in contact with it. Therefore, it is necessary to considerably widen the width of the movable mold itself in the mold clamping and mold opening directions. As a result, not only is the volume and weight of the movable mold unnecessarily increased, resulting in waste, but also a problem that a large holding force is required to mount and support the movable mold on the movable platen. In addition, since a heavy mold must be moved when the mold is clamped and the mold is opened, there is a problem that large driving energy is required. Of course, it is difficult to modify the mold for this purpose.

On the other hand, as described above, it is necessary to stop the roller of the movable platen-side die receiving table near the movable platen-side end of the lower surface of the movable mold. It is necessary to stop the board in the middle of mold opening, but when stopping the movable board in the middle of mold opening by operating the limit switch in this way, the operating condition of the limit switch, hydraulic switching valve, mold clamping cylinder, etc. Therefore, the stop position of the movable plate does not always become a fixed position, and if the movable plate retracts too far behind the desired position,
The rollers of the movable plate side mold cradle will come off the movable mold, which is extremely dangerous because the movable mold may fall, and not only the mold and part of the mold cradle It will be damaged or damaged and the durability of the member will be reduced, and it will take extra time to repair it and return it to its normal position, which will increase the preparation time and reduce the operating rate of the machine. There is a problem of doing.

In order to eliminate such drawbacks, a mold holder on the movable plate side is slidably provided on a guide shoe on the movable plate side, and the mold holder is moved when the movable plate moves backward when the mold is replaced. It is conceivable to adopt a device in which a cylinder for moving to the fixed platen is attached to the movable platen.
When the movable platen is retracted in the mold opening direction in order to replace the mold, the fixed platen side cylinder is moved forward to push the fixed platen side mold cradle in the mold opening direction and the movable platen side cylinder is moved forward. When the movable platen die cradle is pushed out in the mold clamping direction and the movable platen is stopped midway in the mold opening direction, the roller of the movable platen die cradle is moved to the bottom end of the movable platen side of the movable platen. It must be located near the section.

However, in this case, the movement of the movable platen side die receiving base by the movable platen cylinder in the mold clamping direction must be synchronized with the movement of the movable platen in the mold opening direction in the opposite direction. In addition, it is necessary to move the movable platen side metal mold cradle in synchronism with the movement of the fixed platen side metal mold cradle and the fixed metal mold by operating the fixed platen side cylinder. However, this work is not only difficult and troublesome, but also the movable platen die holder, which is to be held at a fixed position, is moved to move the movable platen roller to the movable platen die platen holder as in the conventional example. There is a risk that it may fall from the inside, which is extremely dangerous, and there is a problem that the die may be damaged by the fall. Further, in order to eliminate such a risk, it is necessary to provide a groove for engaging the roller on the lower surface of the movable mold near the end of the movable plate, which causes a problem that the process is troublesome and the manufacturing cost is high.

The present invention has been made in view of the above points, and the molds can be replaced safely and easily by preventing the relative positions of the mold cradle and the mold from changing during the mold replacement. It is an object of the present invention to provide a mold exchanging device for an injection molding device that enables the above.

[0021]

In order to achieve such an object, according to the present invention, a fixed plate side mold cradle is provided slidably on a machine side horizontal member adjacent to the fixed plate. A movable plate side mold cradle, which is separate from the fixed plate side mold cradle, is provided slidably on a guide shoe adjacent to the movable plate and integrated with the movable plate. And both of these mold pedestals are detachably connected with a connecting rod at the bottom of the mold entrance and exit side,
One end of this connecting rod was fixed to one die receiving base, and the other end was detachably attached to the other die receiving base via a detachable member. Further, a plurality of rollers arranged in parallel in the direction orthogonal to the axial direction of the machine base were provided on the upper surfaces of both mold receiving bases.

[0022]

[Operation] During casting in which normal mold clamping and mold opening are performed, the fixed plate side mold receiving base and the movable plate side mold receiving base are fixed to the fixed plate and the movable plate, respectively, by the rollers. And the lower surface of the movable mold are supported. Further, one of the connecting rods that can connect the fixed plate side mold receiving base and the movable plate side mold receiving base to each other is disconnected from the one mold receiving base. In this way, the mold is clamped and the mold is opened with the connecting rod of the mold holder separated.

In exchanging the mold, the fixed mold and the movable mold are integrated, and then the fixed mold and the movable mold and the fixed platen and the movable platen are unfixed. For example, one end is fixed plate side mold. The other end of the connecting rod fixed to the die pedestal is attached to the movable plate side die pedestal via a detachable member. Next, when the mold is opened and the driving device supported on the fixed platen side pushes the fixed platen-side mold holder to a predetermined position, the movable platen-shaped mold holder connected to this also moves to the predetermined position. To do. Then, when the rollers are rotated, the molds on both mold receiving stands are taken out of the machine.

[0024]

1 to 7 show an example in which the mold exchanging device according to the present invention is applied to a horizontal die clamping die casting machine, and FIG. 1 is a fixed platen and a movable plate of the horizontal die clamping machine. Front view of the periphery, FIG. 2 is a sectional view taken along line II-II of FIG.
3 is a sectional view taken along the line III-III of FIG. 1, FIG. 4 is a rear view of the stationary platen and the movable platen shown in FIG. 1 in a state where the mold is removed, and FIG. 5 is also seen from the paper spine side of FIG. 6 is a rear view around the fixed platen and the movable platen in a closed state, FIG. 6 is an enlarged front view of the connecting rod attaching / detaching part, and FIG. 7 is a sectional view taken along line VII-VII of FIG.

In the figure, a fixed platen 2 and a mold clamping plate (not shown) are erected on both ends of the machine base 1 with their planes facing each other, and their four corners are connected by tie bars 3A to 3D. There is. On the tie bars 3A to 3D, a movable platen 4 connected to the mold clamping plate by a toggle mechanism is provided.
Is supported so as to be able to move forward and backward in the perspective direction, and a fixed mold 6 and a movable mold 7 which can be integrally connected to the fixed plate 2 and the movable plate 4, for example, by a removable connecting plate 5, are separately provided. It is removably attached by die clamp devices 6a and 7a. 1 and 4 show a state in which the fixed mold 6 and the movable mold 7 are detached from the fixed plate 2 and the movable plate 4 for replacement and moved to the take-out position outside the machine,
Further, the movable platen 4 is shown in a mold-opened state. Further, among the four tie bars 3A to 3D, the lower tie bar 3C on the die take-out side is configured to be pulled out to the movable platen 4 side by a known technique. Reference numeral 21 denotes a core cylinder vertically attached to the lower surface of the movable mold 7.

On the guide plate 1a provided on the machine base 1 as the machine base side horizontal member, a fixed plate side mold receiving base 8 formed in a rectangular shape and adjacent to the fixed platen 2 is provided.
Is provided so as to be movable back and forth in the axial direction of the machine base, and the movable platen 4 is mounted on the machine base 1 as a horizontal part of the machine base via a guide shoe 4a provided integrally therewith. It is installed so that it can move back and forth in the axial direction. In addition, the movable plate side die receiving base 9 formed in a rectangular shape and adjacent to the movable plate 4 is provided on the guide shoe 4a so as to be movable back and forth in the axial direction. Reference numeral 9a is a guide rod for the movable plate side die receiving table 9, and one end thereof is fixed to the movable plate 4 or the guide shoe 4a. A large number of rotatable rollers 10 are partially exposed at the upper ends of the mold receiving bases 8 and 9 from the upper surfaces of the mold receiving bases 8 and 9 and are arranged in parallel in a direction orthogonal to the axial direction of the machine base. These rollers 10 are provided on the motor 1 fixed to the die receiving pedestals 8 and 9.
1 is rotationally driven through a chain (not shown).

Numeral 12 is a hydraulic cylinder as a drive unit fixed to both side surfaces of the fixed platen 2. The working end of the piston rod 13 is fixed to the die receiving base 3, and the piston rod is pressurized by air pressure. By moving back and forth 13 the mold cradle 8 moves back and forth between the position adjacent to the fixed platen 2 as shown in FIG. 5 and the position separated from the fixed platen 2 shown in FIGS. It is configured.

In the case of this embodiment, the fixed plate side mold receiving base 8 and the movable plate side mold receiving base 9 thus constructed are detachably provided by two connecting rods 14 and 15. There is. Of these, the connecting rod 14 on the die take-out side is provided at a position approximately the same as the upper end of the machine base 1 which is the lower part of the die receiving pedestals 8 and 9, and the connecting rods on the other anti-die take-out side. 15 is provided near the tie bar 3D. Further, one end of this connecting rod 14 is fixed to the side surface of the stationary plate side die receiving base 8 on the die take-out side, and the other end of the horizontally extending connecting rod 14 is enlarged in FIGS. As shown in the drawing, the movable plate side die receiving base 9 is detachably attached to the side surface of the die take-out side and the opposite side surface thereof. The mounting position of the connecting rod 14 on the mold take-out side is arranged at a low position like the position of the machine base 1 because the molds 6 and 7 having the core cylinder 21 on the lower side can be easily taken out of the machine. This is because I got it.

That is, a pair of upper and lower guides 16 each having an L-shaped cross section are bolted to the side surface of the movable plate side die receiving base 9, and the ends thereof are supported via a plate 17. A fork 20 is attached to the working end of the piston rod 19 of the air cylinder 18 as a detachable member that slidably engages with the small diameter portion 14a of the connecting rod 14. By doing this, the piston rod 19 of the air cylinder 18 is moved forward and backward by air pressure, and
It is configured such that 0 moves back and forth to connect or disconnect the movable plate side die cradle 9 and the connecting rod 14. Further, the connecting rod 15 on the opposite side is provided at a position slightly lower than the lower tie bar 3D as shown in FIG. 2, and since the configuration thereof is the same as that of the connecting rod 14, the same member is not provided. The reference numerals are given and the description thereof is omitted.

The mold exchanging operation by the mold exchanging device configured as described above will be described. Normal mold clamping at the time of casting,
In the mold open state, the mold receiving pedestals 8 and 9 are adjacent to the fixed plate 2 and the movable plate 4, respectively, and the fixed mold 6 and the movable mold 7 are provided.
Are fixedly attached to the fixed platen 2 and the movable platen 4 by die clamp devices 6a and 7a, respectively. At this time, the lower surfaces of the fixed mold 6 and the movable mold 7 are in contact with the upper surfaces of the rollers 10 of the fixed plate side mold receiving base 8 and the movable plate side mold receiving base 9 stopper, respectively. The state shown in FIG. However, one end of each of the connecting rods 14 and 15 is fixed to the fixed plate side mold receiving base 8, but the other end is disconnected from the movable plate side mold receiving base 9. Movable plate 4, when the mold is opened
The movable mold 7, the guide shoe 4a, and the movable plate side mold receiving base 9 move to the right in FIG.

Therefore, when exchanging the molds, first, the fixed mold 6 and the movable mold 7 are integrated with each other by the connecting plate 5 or hooks, and the molds 6, 7 are fixed to the fixed plate 2 and the movable plate 4. Then, the piston rod 19 of the air cylinder 18 is advanced by air pressure, and the connecting rods 14 and 15 are grasped by the fork 20 to be integrated.

Then, the hydraulic cylinder 1 is opened while the mold is opened.
When the piston rod 13 of No. 2 is hydraulically advanced, the die receiving pedestals 8 and 9 on which the dies 6 and 7 are mounted and connected by the connecting rods 14 and 15 are integrally formed, and the center shown in FIGS. Move to a predetermined position. In this case, the fixed plate side mold receiving base 8 slides on the guide plate 1a of the machine base 1, and the movable plate side mold receiving base 9 slides on the guide shoes 4a of the movable plate 4. Of course, at this time, the dies 6, 7 and the pedestals 8, 9
The relative position of and does not change at all. And the mold 6,7
Will not fall apart from the die receiving pedestals 8 and 9. Then, the molds 6 and 7 move to positions where they do not interfere with the die clamp devices 6a and 7a. Then, after removing the tie bar 3C so as not to get in the way of the core cylinder 21, when the motor 11 is started, the rollers 10 rotate together,
The molds 6 and 7 are integrally extruded onto a pedestal (not shown).

After that, the next mold is supplied in the reverse order to the above and is mounted on the fixed platen 2 and the movable platen 4. That is, the fork 20 is moved forward by the air cylinder 18, and as shown in FIG. 4, both the die receiving bases 8 and 9 are connected to the connecting rods 14 and 1.
5, the movable platen 4 and the die receiving pedestals 8 and 9 are arranged at the positions shown in FIG. 4 so that the dies 6 and 7 do not interfere with the die clamp devices 6a and 7a.

In this state, the fixed mold 6 and the movable mold 7 are integrated by the connecting plate 5 and placed on the mold receiving pedestals 8 and 9, and the space between the fixed platen 2 and the movable platen 4 is set. To move. The state at this time is as shown in FIG. In this state, the movable platen 4 is moved in the mold clamping direction, and the hydraulic cylinder 1
2 is operated to move both molds 6 and 7 to the fixed plate 6a and the movable plate 7
sandwich with a. At this time, the fixed plate side mold receiving base 8 slides on the guide plate 1a of the machine base 1, and the movable plate side mold receiving base 9 slides on the guide shoes 4a of the movable plate 4.
Therefore, the piston rod 13 of the hydraulic cylinder 12 is retracted, but in this case, the relative positions of the molds 6 and 7 and the mold receiving bases 8 and 9 do not change, and the molds 6 and 7 move to the mold receiving bases 8 and 9. There is no deviation, and there is no risk of the molds 6 and 7 falling.

When the molds 6 and 7 are taken out and supplied, the fixed plate side mold receiving base 8 and the movable plate side mold receiving base 9 are separate bodies, and the connecting rod 14 is at a low position. Even if the core cylinder or the like is hung from the molds 6 and 7, it does not hinder the taking in and out. In addition, molds 6 and 7
It is not necessary to provide a groove for engaging with the roller 10.

In this embodiment, the connecting rod 1
Although the example in which 4 and 15 are fixed to the fixed plate side mold receiving base 8 side is shown, they may be fixed to the movable plate side mold receiving base 9 side. Further, when the connecting rods 14 and 15 are required, they are connected to both the die receiving pedestals 8 and 9, and when not necessary, the connecting rods are detached from both the die receiving pedestals 8 and 9 to another place. It may be stored. Further, in this embodiment, the example in which the two connecting rods 14 and 15 are provided is shown, but the number may be one, or three or more. Further, in the present embodiment, an example in which the present invention is applied to a horizontal die clamping die casting machine is shown, but the present invention can be applied to an injection molding machine for plastics and the like, and the same effect can be obtained.

Further, in the above-mentioned embodiment, the die receiving pedestals 8 and 9 are used.
Although an example in which the moving cylinder 12 is provided between the fixed plate 4 and the fixed plate side mold receiving base 9 is shown, this may be provided between the movable plate 4 and the movable plate side mold receiving base 8. You can also

[0038]

As is apparent from the above description, according to the present invention, in the mold exchanging device of the injection molding device, the upper surface is provided with the plurality of rollers arranged in parallel in the direction orthogonal to the axial direction of the machine base. The fixed plate side mold cradle and the movable plate side mold cradle are adjacent to the fixed plate and the movable plate, respectively, so that they can slide freely on the horizontal part of the machine base and on the guide shoe integrated with the movable plate. Provided so that one of the die pedestals can be driven back and forth in the axial direction of the machine base by a drive device supported by a die mounting board, etc., and both die pedestals can be detachably connected with a connecting rod. By connecting with this connecting rod, the dimension between both mold cradle can be always kept constant, and the relative position of the mold and the mold cradle during mold replacement and casting. Can be kept constant during mold replacement and Can be such that the relative position between the mold and the mold stages is not changed, the mold can be carried out safely and fast die change without even fall from the mold stages during casting.

Further, since the roller of the die receiving base does not slide on the lower surface of the die, the roller or the like does not break down or wear, and the groove into which the roller enters the lower surface of the die. Is not required, and there is no restriction such as not providing unevenness as the shape of the lower surface of the mold. Furthermore, since a desired space is formed between the mold pedestals separately formed and the connecting rod provided at a low position, the shape of the product has become complicated in recent years, which makes it difficult to remove the core from the mold. Even if the cylinder or the like is hung, it does not hinder the taking in and out of the mold, the function of the apparatus is improved, and it is not necessary to remove an extra member, so that the labor and the preparation time can be reduced. Further, since it is not necessary to provide a groove for engaging the roller on the side of the mold cradle in the mold, the processing cost can be reduced and the device can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a front view of the periphery of a fixed platen and a movable platen of a horizontal mold clamping die casting machine embodying the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a rear view of the periphery of a fixed platen and a movable platen as seen from the spine side of FIG.

FIG. 5 is a stationary platen shown in the mold clamping state as seen from the back side of the paper in FIG.
It is a rear view of the movable plate periphery.

FIG. 6 is an enlarged front view of a connecting rod attaching / detaching portion.

7 is a sectional view taken along line VII-VII of FIG.

[Explanation of symbols]

 1 machine base 2 fixed plate 3A tie bar 3B tie bar 3C tie bar 3D tie bar 4 movable plate 4a guide shoe 5 connecting plate 6 fixed mold 6a die clamp device 7 movable mold 7a die clamp device 8 fixed plate side mold cradle 9 movable plate Side mold cradle 10 Roller 12 Hydraulic cylinder 14 Connecting rod 15 Connecting rod 18 Air cylinder 20 Fork 21 Urinder for core

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masamichi Okada 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Corporation (72) Inventor Junji Manabe 1980 Okiyama, Ube-shi, Yamaguchi Prefecture Ube Industries Ltd. Company Ube Machine Works (72) Inventor Rinji Takeda 1980, Okiyama, Ogushi, Ube, Yamaguchi Prefecture Ube Machinery Co., Ltd.

Claims (1)

[Claims] 1. A fixed plate side die receiving base provided adjacent to the fixed plate on a horizontal portion of the machine base so as to be movable back and forth in the axial direction of the machine base, and a separate body from the fixed plate side die receiving base. On the movable platen, which is adjacent to the movable platen and is mounted on the guide shoe integrated with the movable platen so as to move back and forth in the axial direction of the machine base, and the mold between these mold platens. A fixed length connecting rod that is removably attached to the lower part of the entrance and exit side, and fixedly attached to the upper surfaces of both mold receiving bases in parallel in the direction orthogonal to the axial direction of the machine base so as to be removable ， Providing a plurality of rollers for supporting both movable molds, so that both mold receiving bases can be connected by the connecting rod so that the relative position of the mold receiving base and the mold does not change when the molds are replaced. A mold exchanging device for an injection molding device, which is characterized in that